Its all done, reinitialised several times over. It appears that its just a bit wank. Why the hell they use an angular velocity disparity to calculate it is beyond me, what the facks wrong with a lithium battery over a PRV I'll never know.......

Nothing really wrong with wheel speed sensoring, the car is using wheel speeds all the time, for other functions.

Must ask the obvious, you are doing it correctly? Because you wouldn't be the first to miss the vital bit. Pressure gauge OK? I take it, it is on tyres you've had on a while, nothing new recently?

Other than that, you have possibly got a fault. No other warnings, ABS/DSC?

HighlandPete

We-eeell, its come back from the dealers twice with new boots in the last 3 months (fronts and then rears), so hopefully they've done it properly (a gamble, I know) but have double checked pressures digitally, literally not a single thing out of place on the car. No fault codes, nada, zip.

I've just completed a 150 mile journey, probably with a screw in my rear tyre the entire journey and the TPWS didn't go off once. In the 1 series it went off all the time, when there wasn't a puncture, and never when there was.

I had a false trigger on the day that I picked up car up... was fine until i hit 75-80 on the motorway - fortunately on approach to a service station. Pulled up to the air machine and it turned out that the tyre pressures were odd on every wheel with extremes corner to corner! Reinitialised the system and been fine since (touchwood!).

Just a reminder... we should re-initialise the TPWS after any tyre pressure adjustment/correction. Yes, each time we put any air in, or let any out. It is the only way to keep the system as accurate a warning system as possible.